Electrode holder



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" ELECTRODE HOLDER Filed Sept. 2, 1943 2 Sheets-Sheet l May 23, 1944. c.MATHE-WS 51 AL ELECTRODE HOLDER 2, 1943 2 Sheets-Sheet 2 Filed Sept.

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V n S Patented May 23, 1944 N' T STATE 1 ELECTRODE HOLDER Carl Mathewsand Charles Chinzi,

I Jackson, Mich.

2, 1943, Serial No; 500,966 10m (cram-*8 Application September Thisinvention relates to an electrode holder, and has for the primary objectthe provision of a device of this character which will be extremelyconvenient to handle and permit welding operations and the like to beeasily and quickly carried out and is of a construction that will assureagainst the accidental displacement of the electrode and still permitits application and removal to be quickly carried out when desired.

Another object of this invention is th provision of means for coolingthe holder and to reduce to a minimum the amount of heat which may betransmitted thereto throughout its length so that the device may be morecomfortable to use and less apt to subject the operator to burns.

With these and other objects in view as will become more apparent as thedescription proceeds, the invention consists in certain novel featuresof construction, combination and arrangement of parts as will behereinafter more fully described and claimed.

For a complete understanding of our invention, reference is to be had tothe following description and accompanying drawings, in which Figure 1is a side elevation illustrating an electrode holder constructed inaccordance with our invention.

Figure 2 is a top plan view illustrating the device. I

Figure 3 is a transverse sectional view taken on the line 3-3 of Figure1.

Figure 4 is a sectional view taken on the line 44 of Figure 2.

tive socketwtype fitting 9 in which may be secured thelterminal end ofan electric lead. The securing of the terminal end of the lead in thefitting 9 can be carried out in any well known manner and the inner endthereof forms an abutment for one end of a coil spring l0.

Mounted for sliding movement in the outer sleeve 6 is an inner sleeve llcarrying at one end a forked head I2 adapted to engage and force theelectrode tightly against the wall of the opening .1 to preventaccidental displacement of the electrode. The other end of the innersleeve H is acted upon by the spring I Figure 5 is a sectional viewtaken on the line 55 of Figure 1.

Figure 6 is a sectional view taken on the 6-6 of Figure 4.

Figure 7 is a transverse sectional view taken on the line 'l'| of Figure4.

Figure 8 is a transverse sectional view taken on the line 8--8 of Figure5.

Referring in detail to the drawings, the nu meral 5 indicates anelongated tubular grip or handle, constructed of a material which willbe non-conductive of heat as well as electricity. An outer sleeve 6extends into the bore of the handle or grip 5 and is removably securedtherein by set screws 1 countersunk in the handle or grip. The outersleeve 6 is of conductive metallic material and has one end remotelylocated to the handle or rip and enlarged and apertured, as shown at I,to freely receive an electrode 8. The other end of the outer sleeveterminates flush with the butt or rear end of the handle or grip 5 andirictionally receives therein a conducline to urge the head 12 into aposition of tightly wedging the electrode against displacement. It ispreferable that blocks l3 be arranged between the inner ends of theinner sleeve I and one end of the coil spring It] and between thefitting 9 and the other end of the coil spring.

A trigger M is slidably mounted on the handle or grip 5 and hasdetachably secured thereto a pin 15 detachably secured to the innersleeve and operating in a slot 16 provided in the outer sleeve 6. Asliding movement of the trigger M in one direction correspondingly movesthe inner sleeve ll disengaging the head I from the electrode permittingthe latter to become free for removal. With the head l2 in a retractedposition, the electrode can be adjusted or another substituted therefor.The head l2 may be secured on the inner sleeve in any well known manner.As soon as the trigger I4 is manually released the spring I0 acts toengage the head [2 with the electrode.

The forward end of the handle or grip 5 is equipped with a removableguard plate I"! acting to shield the hand of the operator.

A cooling jacket I1 is mounted on the outer sleeve 6 and surrounds theopening 1' thereof. The cooling jacket Il' mounted on the outer sleeveforms a fluid space l8 which extends about the opening I for the purposeof permitting a cooling fluid to be circulated about the opening I andin close proximity to the electrode for the purpose of carrying ofiheat.

Inlet and outlet pipes 19 and 20 are connected to an end wall of thecooling jacket and parallel the outer sleeve 6 and extend throughopenings provided in the handle or grip 5. The free ends of the pipes l9and 20 are provided with fittings 2| to which flexible conduits leadingfrom a source of fluid supply may be connected. The fluid enters thejacket by way of the pipe l9 and escapes by wayof the pipe 20. The pipe19 is of a greater length than the pipe 20 and ter- Having thusdescribed the invention, what claim is:

In an electrode holder, an outer sleeve having 16 openings arrangedoppositely to each otherand adjacent one end of said sleeve to receivean electrode, said end of the-sleeve being-enlarged and provided with acurved wall to engage the electrode between said openings, a handle'secured to the sleeve, aspring pressed-inner sleeve slidable in theouterlsleeve and including. a solid forked head at; one end operating inthe enlarged end of the outer sleeve to engage and force the electrodeagainst the curved wall of the enlarged end of the outer sleeve betweensaid openings, manually operated means carried by the handle andconnected to the inner sleeve for retracting the head from theelectrode, a cooling jacket mounted on and surrounding a portion of theouter sleeve and the enlarged end thereof, said jacket having oppositewalls flattenedagainst the enlarged end of the outer sleeve and providedwith openings matching the first-named openings to permit the electrodeto extend therethrough, and inlet and outlet cooling fluid conduitsconnected to the jacket with the discharge end of the inlet conduitlocated adjacent the enlarged end of the outer sleeve and the flattenedwalls of the jacket to cause cooling fluid to pass in contact with thecurved wall of the enlarged end of said outer 20 sleeve.

CARL MATHEWS. CHARLES CHINZI.

